.case-application {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 40px;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    cursor: pointer;
    transition: all 0.3s ease;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #e0e0e0;
    color: #888;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.step-title {
    color: #888;
    font-size: 14px;
    transition: all 0.3s ease;
}

.step.active .step-number {
    background-color: #409eff;
    color: white;
}

.step.active .step-title {
    color: #409eff;
    font-weight: bold;
}

.step.completed .step-number {
    background-color: #67c23a;
    color: white;
}

.step.completed .step-title {
    color: #67c23a;
}

.step-line {
    position: absolute;
    top: 18px;
    left: 0;
    height: 4px;
    background-color: #409eff;
    z-index: 0;
    transition: width 0.4s ease;
}

.step-content {
    padding: 20px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 {
    color: #333;
    margin-bottom: 20px;
    font-weight: 500;
}

.case-type-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.case-type {
    padding: 15px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #f9f9f9;
}

.case-type:hover {
    border-color: #409eff;
    background-color: #f0f7ff;
}

.case-type.selected {
    border-color: #409eff;
    background-color: #ecf5ff;
    color: #409eff;
    font-weight: bold;
}

textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    resize: vertical;
    font-size: 14px;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: #409eff;
}

.description-tips {
    margin-top: 15px;
    padding: 12px;
    background-color: #f5f7fa;
    border-radius: 4px;
    color: #606266;
    font-size: 14px;
}

.description-tips p {
    margin: 0 0 8px 0;
    font-weight: bold;
}

.description-tips ul {
    margin: 0;
    padding-left: 20px;
}

.upload-area {
    border: 2px dashed #dcdfe6;
    border-radius: 6px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
}

.upload-area.dragging {
    border-color: #409eff;
    background-color: #f0f7ff;
}

.upload-area:hover {
    border-color: #409eff;
}

.upload-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    color: #606266;
    transition: color 0.3s;
}

.upload-btn:hover {
    color: #409eff;
}

.upload-btn i {
    font-size: 36px;
    margin-bottom: 10px;
}

.upload-hint {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(64, 158, 255, 0.1);
    color: #409eff;
    font-weight: bold;
    font-size: 18px;
    opacity: 0;
    transition: opacity 0.3s;
}

.upload-area.dragging .upload-hint {
    opacity: 1;
}

.file-types-hint {
    margin-top: 10px;
    color: #909399;
    font-size: 12px;
}

.file-list-container {
    margin-top: 20px;
    border: 1px solid #ebeef5;
    border-radius: 4px;
}

.file-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background-color: #f5f7fa;
    border-bottom: 1px solid #ebeef5;
}

.clear-all-btn {
    background: none;
    border: none;
    color: #f56c6c;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 3px;
}

.clear-all-btn:hover {
    background-color: #fef0f0;
}

.file-list {
    max-height: 250px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
    transition: all 0.3s;
}

.file-item:hover {
    background-color: #f5f7fa;
}

.file-info {
    display: flex;
    align-items: center;
    flex-grow: 1;
    overflow: hidden;
}

.file-info i {
    margin-right: 10px;
    color: #409eff;
    flex-shrink: 0;
}

.file-details {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.file-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    color: #909399;
    font-size: 12px;
}

.file-item i.el-icon-close {
    cursor: pointer;
    color: #909399;
    margin-left: 10px;
    flex-shrink: 0;
}

.file-item i.el-icon-close:hover {
    color: #f56c6c;
}

.empty-tip {
    color: #909399;
    font-size: 14px;
    margin-top: 15px;
}

.action-buttons {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    gap: 15px;
}

.btn {
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.prev-btn {
    background-color: #f5f7fa;
    color: #606266;
}

.prev-btn:hover {
    background-color: #e4e7ed;
}

.next-btn, .submit-btn {
    background-color: #409eff;
    color: white;
}

.next-btn:hover, .submit-btn:hover {
    background-color: #66b1ff;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 过渡动画 */
.fade-slide-enter-active,
.fade-slide-leave-active {
    transition: all 0.3s ease;
}

.fade-slide-enter-from,
.fade-slide-leave-to {
    opacity: 0;
    transform: translateX(20px);
}